* [Bluez-users] Low quality audio on Bluetooth Headset @ 2006-11-15 19:24 Manuel Naranjo 2006-11-15 21:28 ` Brad Midgley 0 siblings, 1 reply; 5+ messages in thread From: Manuel Naranjo @ 2006-11-15 19:24 UTC (permalink / raw) To: Bluez-users Hi everyone, I have a pair of Hifi bluetooth hearphones, that AIRcable (www.aircable.net) send to me. I use it under Windows and Linux, it cames with a usb bt dongle, that is recognized as a usb-sound card which works perfectly, the thing is that when I try to use the headset with a generic Bluetooth Dongle (using a2dpd) I get very low quality audio. I think the headphones work at 22kHz, and I don't get more than 11kHz when I use a2dpd, is there anything that I can do to fix this (including doing some code :D) Cheers, Manuel ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Bluez-users mailing list Bluez-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-users ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Bluez-users] Low quality audio on Bluetooth Headset 2006-11-15 19:24 [Bluez-users] Low quality audio on Bluetooth Headset Manuel Naranjo @ 2006-11-15 21:28 ` Brad Midgley 2006-11-15 21:39 ` Naranjo Manuel Francisco 0 siblings, 1 reply; 5+ messages in thread From: Brad Midgley @ 2006-11-15 21:28 UTC (permalink / raw) To: BlueZ users Manuel > I have a pair of Hifi bluetooth hearphones, that AIRcable > (www.aircable.net) send to me. I use it under Windows and Linux, it > cames with a usb bt dongle, that is recognized as a usb-sound card which > works perfectly, the thing is that when I try to use the headset with a > generic Bluetooth Dongle (using a2dpd) I get very low quality audio. I > think the headphones work at 22kHz, and I don't get more than 11kHz when > I use a2dpd, is there anything that I can do to fix this (including > doing some code :D) what kind of quality problem? Is it only the low sampling rate or is it one of the other problems? (low volume... popping sounds... played too fast or slow... static...) a2dp headsets are required to support 44.1khz btw. Brad ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Bluez-users mailing list Bluez-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-users ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Bluez-users] Low quality audio on Bluetooth Headset 2006-11-15 21:28 ` Brad Midgley @ 2006-11-15 21:39 ` Naranjo Manuel Francisco 2006-11-16 6:32 ` [Bluez-users] RE : " Frederic Dalleau 0 siblings, 1 reply; 5+ messages in thread From: Naranjo Manuel Francisco @ 2006-11-15 21:39 UTC (permalink / raw) To: BlueZ users > > what kind of quality problem? Is it only the low sampling rate or is it > one of the other problems? (low volume... popping sounds... played too > fast or slow... static...) Very low sampling rate, it must be working about 10kHz. And I also get disconnection problems, but this can be due to problems on my usb connectors, they aren't working very well lately. > > a2dp headsets are required to support 44.1khz btw. Mhh damn, this can be the cause. They are supposed to support 22-24kHz. Again, if I use windows with Widcomm I get a very high rate, it must be about 22 khz. If I use the usb-dongle that comes with it, I get a very good rate, under linux or windows. I will try again, and see if I can improve it. Thanks, Manuel. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Bluez-users mailing list Bluez-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-users ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bluez-users] RE : Low quality audio on Bluetooth Headset 2006-11-15 21:39 ` Naranjo Manuel Francisco @ 2006-11-16 6:32 ` Frederic Dalleau 2006-11-16 12:16 ` Manuel Naranjo 0 siblings, 1 reply; 5+ messages in thread From: Frederic Dalleau @ 2006-11-16 6:32 UTC (permalink / raw) To: BlueZ users [-- Attachment #1: Type: text/plain, Size: 1655 bytes --] Hi, Can you send us the output of the dameon and your .a2dprc file? As usual, which player are you using? Thanks, Frederic. -------- Message d'origine-------- De: bluez-users-bounces@lists.sourceforge.net de la part de Naranjo Manuel Francisco Date: mer. 15/11/2006 22:39 À: BlueZ users Objet : Re: [Bluez-users] Low quality audio on Bluetooth Headset > > what kind of quality problem? Is it only the low sampling rate or is it > one of the other problems? (low volume... popping sounds... played too > fast or slow... static...) Very low sampling rate, it must be working about 10kHz. And I also get disconnection problems, but this can be due to problems on my usb connectors, they aren't working very well lately. > > a2dp headsets are required to support 44.1khz btw. Mhh damn, this can be the cause. They are supposed to support 22-24kHz. Again, if I use windows with Widcomm I get a very high rate, it must be about 22 khz. If I use the usb-dongle that comes with it, I get a very good rate, under linux or windows. I will try again, and see if I can improve it. Thanks, Manuel. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Bluez-users mailing list Bluez-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-users [-- Attachment #2: winmail.dat --] [-- Type: application/ms-tnef, Size: 3730 bytes --] [-- Attachment #3: Type: text/plain, Size: 347 bytes --] ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV [-- Attachment #4: Type: text/plain, Size: 164 bytes --] _______________________________________________ Bluez-users mailing list Bluez-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-users ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Bluez-users] RE : Low quality audio on Bluetooth Headset 2006-11-16 6:32 ` [Bluez-users] RE : " Frederic Dalleau @ 2006-11-16 12:16 ` Manuel Naranjo 0 siblings, 0 replies; 5+ messages in thread From: Manuel Naranjo @ 2006-11-16 12:16 UTC (permalink / raw) To: BlueZ users Frederic Dalleau escribi=F3: > Hi, > Can you send us the output of the dameon and your .a2dprc file? > As usual, which player are you using? > Thanks, > Frederic Hi, At the end you can find the output. I think I have a clue why I get so = low audio quality, I think that a2dpd is connecting to the hands free = channel instead of the hifi channel (check the sdpbrowse tools at the = end). Is there anyway I can select to which channel a2dpd connects? Cheers, Manuel OUTPUT FROM a2dpd: Cannot open /dev/input/uinput: No such file or directory a2dpd [Nov 8 2006 10:26:52] starting ...a2dpd addr=3D00:12:0E:06:C5:8A = timer=3D4000 us [Nov 8 2006 10:26:52] setscheduler returns -1 (errno=3D1:Operation not permitted) main_thread:Accepting incoming tcp stream connection New connection to bluetooth [44100 hz] avrcp: Accepting incoming connection avdtp: Accepting incoming connection main_thread: Accepted 5 PCM thread 0.5 started [1] Receiving failed on socket 0.5 error (0/4 bytes) errno=3D0:Success Client thread 0.5 ending: error main_thread:Accepting incoming tcp stream connection main_thread: Accepted 5 PCM thread 0.5 started [1] Receiving failed on socket 0.5 error (0/4 bytes) errno=3D0:Success Client thread 0.5 ending: error main_thread:Accepting incoming tcp stream connection main_thread: Accepted 5 PCM thread 0.5 started main_thread:Accepting incoming tcp stream connection [1] Receiving failed on socket 0.5 error (-1/4 bytes) errno=3D11:Resource = temporarily unavailable Client thread 0.5 ending: timeout main_thread: Accepted 10 PCM thread 0.10 started DEBUG: a2dp_new: 00:12:0E:06:C5:8A, 44100 main_thread:Accepting incoming tcp stream connection DEBUG: detect_a2dp: Found A2DP Sink DEBUG: connect_stream: Found A2DP Sink at the destination (psm_cmd=3D25) DEBUG: connect_stream: Sent the Stream End Point Discovery Command DEBUG: a2dp_handle_avdtp_message: Read non command packet = (msgtype=3D2,signal=3D1) DEBUG: connect_stream: Got a Stream End Point Discovery (4 bytes) = Response (msgtype=3D2,pkttype=3D0,lbl=3D0,sig=3D1,rfa=3D0) 02010408 DEBUG: connect_stream: received 1 capabilities DEBUG: process_seid: Got capabilities response: servcap_cap=3D1, servcap_len=3D0, cap_type=3D7, length=3D6, media_type=3D0, codec=3D0 avrcp: socket 7: Connection from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 DEBUG: process_seid: Got Set Configurations Response (2 = bytes:msgtype=3D2,pkttype=3D0,lbl=3D2,sig=3D3,rfa=3D0) DEBUG: connect_stream: Sent stream start(seid=3D1) DEBUG: connect_stream: Got start stream confirm DEBUG: listen_thread: Listen thread running [control_sk=3D5] avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 avrcp: socket 7: Reading from 8A:C5:06:0E:12:00, mtu=3D672 handling SIGINT main_thread: Accepted 11 Destroying lpA2dp, end of loop DEBUG: a2dp_destroy: Begin DEBUG: a2dp_free: DEBUG: a2dp_destroy: a2dp_destroy(0x8058460) OK Client thread 0.10 ending: no error A2DPD still 2 clients running socket 7: Receive failed 0 (error 0:Success) avrcp: socket 7: timed out A2DPD still 2 clients running A2DPD terminated succesfully ----- END OF OUTPUT sdpbrowse results : Service Name: Audio Sink Service RecHandle: 0x110b Service Class ID List: "Audio Sink" (0x110b) Protocol Descriptor List: "L2CAP" (0x0100) PSM: 25 "AVDTP" (0x0019) uint16: 0x100 Language Base Attr List: code_ISO639: 0x656e encoding: 0x6a base_offset: 0x100 Profile Descriptor List: "Advanced Audio" (0x110d) Version: 0x0100 Service Name: Headset Service RecHandle: 0x1108 Service Class ID List: "Headset" (0x1108) "Generic Audio" (0x1203) Protocol Descriptor List: "L2CAP" (0x0100) "RFCOMM" (0x0003) Channel: 8 Language Base Attr List: code_ISO639: 0x656e encoding: 0x6a base_offset: 0x100 Profile Descriptor List: "Headset" (0x1108) Version: 0x0100 Service Name: Handsfree Service RecHandle: 0x111e Service Class ID List: "Handsfree" (0x111e) "Generic Audio" (0x1203) Protocol Descriptor List: "L2CAP" (0x0100) "RFCOMM" (0x0003) Channel: 7 Language Base Attr List: code_ISO639: 0x656e encoding: 0x6a base_offset: 0x100 Profile Descriptor List: "Handsfree" (0x111e) Version: 0x0101 ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=3Djoin.php&p=3Dsourceforge&CID=3DDE= VDEV _______________________________________________ Bluez-users mailing list Bluez-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-users ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2006-11-16 12:16 UTC | newest] Thread overview: 5+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2006-11-15 19:24 [Bluez-users] Low quality audio on Bluetooth Headset Manuel Naranjo 2006-11-15 21:28 ` Brad Midgley 2006-11-15 21:39 ` Naranjo Manuel Francisco 2006-11-16 6:32 ` [Bluez-users] RE : " Frederic Dalleau 2006-11-16 12:16 ` Manuel Naranjo
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